About exit excution and hook_Segment_error()

[LakerMoon]

I tried to use unicorn to execute some sample(.exe) written by me.
But it always after happening segment error exit when i execute other PE files.(with or without virus )
Due to hook_Segment_error(), it will map and write the given address into unicorn if the address is not mapped.
Sometimes, it stop emulation because Error returned 7: Invalid memory write (UC_ERR_WRITE_UNMAPPED)
But it still exit when map and write finished.

For example:
FS : 01804000
Loading Address: 02E50000
Image Size : 0008B000
Image Region : 02E50000 - 02EDB000
EntryPoint :02E514E0

start emulating: ...
begin(IP): 2e514e0(01AFFC94)
0x02E514E0 Missing memory at 0x4877D8, data size = 4, data value = 0x0
mem_type: 20
0x02EC0C60 Missing memory at 0x47774C, data size = 4, data value = 0x0
mem_type: 19
uc_mem_map failed!
uc_mem_write failed!